[SI-LIST] Re: Impedance Controlled Board Production Vs Normal Board Production

  • From: steve weir <weirsi@xxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Thu, 05 Jan 2012 07:59:42 -0800

Jeff, I think the wishful thinking is that impedance will be adequately 
controlled without stipulating as much in the purchase contract.  I 
believe that such wishful and presumptuous thinking is dangerous.

Best Regards,


Steve
On 1/5/2012 7:22 AM, Loyer, Jeff wrote:
> Perhaps I'm the only one who is finding it ironic that, on a "Signal 
> Integrity" reflector list, "Impedance Controlled" isn't considered "Normal".  
> I haven't had the luxury of not specifying impedance control since a small 
> 33MHz PCI card design, many years ago.
>
> I'm afraid Jayasuryan that you won't find the answer you're looking for on an 
> e-mail thread, or it is going to be a long, drawn out, painful affair.  You 
> have a lot of work to do to understand what impedance control is and how it 
> relates to signal integrity.  I would recommend starting with the books that 
> have been listed many times on this list.  You can also search the archives 
> for "impedance control" to find discussions about different opinions on how 
> much is enough.
>
> Good luck in the new year,
> Jeff Loyer
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On 
> Behalf Of steve weir
> Sent: Monday, January 02, 2012 6:23 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: Impedance Controlled Board Production Vs Normal Board 
> Production
>
> Suppose as you like.  Hope as you might.  What you don't contract is not 
> guaranteed.
>
> Steve.
> On 1/2/2012 5:56 AM, Jayasuryan KG wrote:
>> Dear Experts,
>>
>>
>>
>> Happy New Year!!
>>
>>
>>
>> I have question regarding the impedance controlled board production!
>> Is there any special process to produce impedance controlled board
>>
>> rather than the normal production?
>>
>>
>>
>> Suppose if I go with normal production for a  impedance controlled board 
>> (the design has been done to meet the impedance) what are the possible 
>> issues can happen?
>>
>>
>>
>> Looking for your immediate response. Thanks in advance.
>>
>>
>>
>> Best Regards,
>>
>> - Jayasuryan
>>
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>
> --
> Steve Weir
> IPBLOX, LLC
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-- 
Steve Weir
IPBLOX, LLC
150 N. Center St. #211
Reno, NV  89501
www.ipblox.com

(775) 299-4236 Business
(866) 675-4630 Toll-free
(707) 780-1951 Fax

All contents Copyright (c)2012 IPBLOX, LLC.  All Rights Reserved.
This e-mail may contain confidential material.
If you are not the intended recipient, please destroy all records
and notify the sender.

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